40451542 has 4 divisors (see below), whose sum is σ = 60677316. Its totient is φ = 20225770.

The previous prime is 40451539. The next prime is 40451557. The reversal of 40451542 is 24515404.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10112884 + ... + 10112887.

It is an arithmetic number, because the mean of its divisors is an integer number (15169329).

Almost surely, 2^40451542 is an apocalyptic number.

40451542 is a deficient number, since it is larger than the sum of its proper divisors (20225774).

40451542 is a wasteful number, since it uses less digits than its factorization.

40451542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20225773.

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 40451542 is about 6360.1526711235. The cubic root of 40451542 is about 343.2772537515.

Adding to 40451542 its reverse (24515404), we get a palindrome (64966946).

The spelling of 40451542 in words is "forty million, four hundred fifty-one thousand, five hundred forty-two".